Its 16 A continuous rating and TM220 thermal-magnetic release cover branch circuits feeding motor starters, control transformers, or distribution subfeeds where the trip curve needs to ride through moderate inrush without nuisance trips. Interrupting capacity is the headline number here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V.
The TM220 release is a fixed thermal-magnetic design — no interchangeable trip units, no electronic adjustment. Thermal element tracks the 16 A continuous rating across ambient temperatures from -25 °C to 70 °C, with a 1 A derating step at 60 °C (15 A from 60 °C through 70 °C). The magnetic pickup is fixed at the factory for the 16 A frame; you cannot dial it up for motor-starting inrush, so verify the load's inrush characteristic against the standard TM220 curve before committing to the BOM. The 3-pole form factor handles three-phase circuits.